초록 ▼

A gear tooth form is disclosed that maximizes the profile (transverse) contact ratio for coplanar axis gearing. As the tooth form allows teeth two or three times as fine as those of conventional involute gearing to be used without loss of torque capacity, the face (axial) contact ratio for helical o

A gear tooth form is disclosed that maximizes the profile (transverse) contact ratio for coplanar axis gearing. As the tooth form allows teeth two or three times as fine as those of conventional involute gearing to be used without loss of torque capacity, the face (axial) contact ratio for helical or spiral bevel gearing is also maximized. The total contact ratio (profile plus face contact ratios) is therefore maximized, and the torque load is divided over the maximum number of teeth. This minimizes the transmission error, which in turn minimizes operating noise and vibration. The gearing employs a minimum pressure angle and a path of contact that includes a curved portion.

대표청구항 ▼

A pair of mating gears that are not preloaded, are mounted on coplanar axes, and have conjugate teeth formed to make contact, when said gears are transmitting torque, over a transverse plane path of contact that affords a ratio of roll angle to pitch angle of at least 2.5, said path being non-strai

A pair of mating gears that are not preloaded, are mounted on coplanar axes, and have conjugate teeth formed to make contact, when said gears are transmitting torque, over a transverse plane path of contact that affords a ratio of roll angle to pitch angle of at least 2.5, said path being non-straight and having an average pressure-angle smaller than 14°.